Allowing for RPM-based installation

Now supporting $rpm_install for the case where
a user wants to install from an rpm-based repo.
* rpm_install flag (false by default)
* now using "data_processing" in service endpoint
* initializing db schema at end of install

Change-Id: I71ad51e418b0579d1b048778ac550adc504f53b9
Closes-Bug:  bug 1322626